PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MH2Reactor

United Transformer Corp Sub of Opt Industries Inc · NSN 5950-01-187-1721 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-187-1721 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-187-1721. Primary manufacturer part number: MH2.
Features
  • Reactor — FSC 5950
  • Terminal Type and Quantity: 2 WIRE LEAD
  • Test Data Document: 81349-MIL-T-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Body Outside Diameter: 0.468 INCHES MAXIMUM IN
  • Winding Quantity: 1 SINGLE COMPONENT
  • Body Length: 0.281 INCHES MAXIMUM IN
  • Maximum Operating Temp: 105.0 CELSIUS DEGC
  • Inclosure Type: FULLY INCLOSED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-01-187-1721, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is United Transformer Corp Sub of Opt Industries Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-01-187-1721
Primary Part NumberMH2
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerUnited Transformer Corp Sub of Opt Industries Inc
StatusCANCELLED
Terminal Type and Quantity2 WIRE LEAD
Test Data Document81349-MIL-T-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Body Outside Diameter0.468 INCHES MAXIMUM IN
Winding Quantity1 SINGLE COMPONENT
Body Length0.281 INCHES MAXIMUM IN
Maximum Operating Temp105.0 CELSIUS DEGC
Inclosure TypeFULLY INCLOSED
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Inductance Rating1.50 MILLIHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Mounting MethodTERMINAL SINGLE GROUP
DC Resistance Rating in Ohms4.900 SINGLE COMPONENT SINGLE WINDING
Winding Operating Current57.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Specification/standard Data81349-MIL-T-27/241 GOVERNMENT SPECIFICATION
Reliability IndicatorNOT ESTABLISHED
Inductance TypeFIXED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5905-00-055-3084 INTERCHANGEABLE
Resistor,variable,wire Wound,non
4920-00-509-5157 INTERCHANGEABLE
Test Stand,demand Oxygen Regulat
2010-00-661-2117MH2 INTERCHANGEABLE
Control,engine
Steward Davis International Inc
2330-00-995-5613 INTERCHANGEABLE
Semitrailer,compressed Gas Cylin
5950-01-135-9962 INTERCHANGEABLE
Reactor
5950-01-141-7422 INTERCHANGEABLE
Reactor
4920-01-181-9622P7-02-0006 INTERCHANGEABLE
Test Stand,demand Oxygen Regulat
Acr Electronics, Inc. Dba Acr Electronics Inc
5950-01-187-1675 INTERCHANGEABLE
Reactor
5950-01-187-1718 INTERCHANGEABLE
Reactor
5950-01-187-1728 INTERCHANGEABLE
Reactor
Cross-Reference Index
Part NumberManufacturer
MH2 United Transformer Corp Sub of Opt Industries Inc (USA)
MIL-T-27/241 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M27/241-02 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-27/241 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MH2 Magnetika Inc Div Magnetika/phillipsburg Location (USA)
MH2 Magnetika Inc (USA)
8511295 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
Related Parts
5905-00-055-3084INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
4920-00-509-5157INTERCHANGEABLE
TEST STAND,DEMAND OXYGEN REGULAT
2010-00-661-2117INTERCHANGEABLE
CONTROL,ENGINE
MH2
2330-00-995-5613INTERCHANGEABLE
SEMITRAILER,COMPRESSED GAS CYLIN
5950-01-135-9962INTERCHANGEABLE
REACTOR
5950-01-141-7422INTERCHANGEABLE
REACTOR
4920-01-181-9622INTERCHANGEABLE
TEST STAND,DEMAND OXYGEN REGULAT
P7-02-0006
5950-01-187-1675INTERCHANGEABLE
REACTOR
5950-01-187-1718INTERCHANGEABLE
REACTOR
5950-01-187-1728INTERCHANGEABLE
REACTOR
5950-01-187-7362INTERCHANGEABLE
REACTOR
4820-01-251-5827INTERCHANGEABLE
STEM,FLUID VALVE

Frequently Asked Questions

What is NSN 5950-01-187-1721?

NSN 5950-01-187-1721 is a Reactor, manufactured by United Transformer Corp Sub of Opt Industries Inc, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-01-187-1721?

NSN 5950-01-187-1721 has 7 cross-referenced part numbers: MH2 (United Transformer Corp Sub of Opt Industries Inc), MIL-T-27/241 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M27/241-02 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-PRF-27/241 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MH2 (Magnetika Inc Div Magnetika/phillipsburg Location) and 2 more.

What NSN replaces 5950-01-187-1721?

There are 12 known substitutes for 5950-01-187-1721: 5905-00-055-3084, 4920-00-509-5157, 2010-00-661-2117 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MH2?

Key specifications for MH2: Terminal Type and Quantity: 2 WIRE LEAD; Test Data Document: 81349-MIL-T-27 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).; Body Outside Diameter: 0.468 INCHES MAXIMUM IN; Winding Quantity: 1 SINGLE COMPONENT. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-01-187-1721 still in active supply?

NSN 5950-01-187-1721 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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